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mailer

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n.<美>邮寄者,信封,包装邮件用的箱(或匣),邮寄广告性印刷品

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mailer为短语/超纲词汇

mailer


n (US) (usu small) container or envelope in which sth is sent by post (通常为小的)邮寄物品的容器或封套.

mailer


n[C]
especially AmE a container or envelope used for sending something small by post